package com.itheima.常用API.基本类型包装类;

public class Demo5 {
    public static void main(String[] args) {
        int a=Integer.valueOf("12");
        String s1=Integer.toString(100);
        System.out.println(s1);
        String s3 = String.valueOf(100);
        System.out.println(s3);
        Object o=new Object();
        o.toString();
    }
}
